{"title":"Thermodynamics of Na3Cr2(AsO4)3 with garnet structure","authors":"","doi":"10.1016/j.jct.2024.107364","DOIUrl":null,"url":null,"abstract":"<div><p>In this work the heat capacity <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>=</mo><mi>f</mi><mrow><mo>(</mo><mi>T</mi><mo>)</mo></mrow></mrow></math></span> of the garnet-structured Na<sub>3</sub>Cr<sub>2</sub>(AsO<sub>4</sub>)<sub>3</sub> was first investigated. Measurements were performed in the range of <em>T =</em> (5 and 323) K using a precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity were verified by X-ray diffraction analysis with Rietveld method calculations and X-ray microanalysis. The <span><math><mrow><msubsup><mi>C</mi><mrow><mi>p</mi><mo>,</mo><mi>m</mi></mrow><mi>o</mi></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>H</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mo>,</mo><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>S</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup><mi>a</mi><mi>n</mi><mi>d</mi><mspace></mspace><msubsup><mi>Δ</mi><mrow><mn>0</mn></mrow><mi>T</mi></msubsup><msubsup><mi>G</mi><mrow><mi>m</mi></mrow><mn>0</mn></msubsup></mrow></math></span> have been calculated using experimental data from <em>T→</em>0 to 323 K.</p></div>","PeriodicalId":54867,"journal":{"name":"Journal of Chemical Thermodynamics","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Thermodynamics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021961424001174","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In this work the heat capacity of the garnet-structured Na3Cr2(AsO4)3 was first investigated. Measurements were performed in the range of T = (5 and 323) K using a precise adiabatic vacuum calorimeter. The phase purity and composition homogeneity were verified by X-ray diffraction analysis with Rietveld method calculations and X-ray microanalysis. The have been calculated using experimental data from T→0 to 323 K.
本研究首次对石榴石结构的 Na3Cr2(AsO4)3 的热容量 Cp,mo=f(T) 进行了研究。测量是在 T = (5 和 323) K 的范围内使用精密绝热真空热量计进行的。通过 X 射线衍射分析、里特维尔德法计算和 X 射线显微分析验证了相的纯度和成分的均匀性。利用从 T→0 到 323 K 的实验数据计算了 Cp、mo、Δ0THm0、Δ0TSm0 和Δ0TGm0。
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The Journal of Chemical Thermodynamics exists primarily for dissemination of significant new knowledge in experimental equilibrium thermodynamics and transport properties of chemical systems. The defining attributes of The Journal are the quality and relevance of the papers published.
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